b'2019 | ANNUAL REPORTTABLE OFCONTENTSNuclear Science User Facilities Our NSUF Team . 4 From the NSUF Director 6 NSUF Overview By the Numbers 8 NSUF Across the Nation 10 Highlights . 12 NSUF Year in the Life . 16 NFML Update 22NSUF Features John Jackson Feature . 26 Q&A with Mike Worley . 28NSUF Awarded Projects FY-19 Awarded Projects . 30 Understand the Phase Transformation of Thermal Aged and Neutron IrradiatedDuplex Stainless Steels Used in LWRs 46 Characterization of Grain Boundaries of Alloy X-750 and SS 304 Irradiated inExperimental Breeder Reactor-II 54 Characterization of Neutron-Irradiated Zr-1Nb-O Using Scanning TransmissionElectron Microscopy 56 Study of Nb Redistribution in ZrNb Alloys Following Proton Irradiation by TransmissionElectron Microscopy with Energy Dispersive X-ray Spectrometry . 58 Radiation Damage in High-Entropy Alloys 62 Characterization and Modeling of Secondary Phase Evolution in an Irradiated Zr-1.0Nb Alloy 64 Active Irradiation Testing of Temperature Sensing Capability of Clad Sapphire Optical Fiberswith Type 2 Bragg Gratings using Optical Backscatter Reflectometry 68 In-situ Small-Scale Mechanical Testing of Fast Reactor Mixed Oxide Pins . 72 High Fluence Irradiation Testing of Fiber Optic Material Transmission76ResourcesAcronyms . 78Index 80'